[feature update question] Text box as a Filter

[floriandierickx]

Hey @chadn, thanks a lot for your tool. It is alive and kicking on my website, and I make lots of use of it [https://floriandierickx.github.io/agenda/]

The thing that would make it ultimately useful, is the ability to search with keywords. I see that at some point you reflected on implementing a keyword filter. Is there any chance this functionality can be added, or could (or somebody reading this / thinking about the same functionality) provide a short guidance of how to start implementing it?

Thanks again